I see this when enabling Drupal Forum
PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'mysite.forum_index' doesn't exist: SELECT f.* FROM {forum_index} f ORDER BY f.created DESC LIMIT 5 OFFSET 0; Array ( ) in forum_block_view_pre_render() (line 720 of /home/webs.net/modules/forum/forum.module).